Joseph R. Wood, the convicted murderer put to death on July 23 in Arizona, was injected with far more of each of the two drugs used by the state than is called for in the state’s lethal injection protocol, according to notes released Friday by the Arizona Department of Corrections.

Over the course of two hours, Mr. Wood was injected 15 separate times with a cocktail of two drugs: midazolam, a sedative, and hydromorphone, an opiate, according to the notes.